• They do not need electrical power to operate. This can be a great advantage in the case of a power outage.

• Simple to install - no calibration is necessary.

• Can be used as a reference to check, or calibrate, other level technologies.

• Pressure  rating from vacuum to 4 000 psig.

• Temperature rating from -50° F –750° F (Carbon Steel) / -150° F –750° F 316 (Stainless Steel)

•   Not af fected by the chemical or electrical proper ties of the process liquid. Specific gravit y, dielectric, conductivity, surface turbulence, vapor, foam, etc. no longer needs to be considered.